As the title say, is it possible, I did extract the files then copy/replace them over to C:\Program Files (x86)\SEGA\PHANTASYSTARONLINE2\pso2_bin\data\win32but it seem it keep updating itI really don't need to use PSO2Tweaker is because my is not IP blocked

Due to a change in the way the official launcher validates files before launching the game, it is not currently possible to use the patches with the official launcher. It is not likely that this issue will be resolved. Sorry.

Please use AIDA's tweaker for the time being. You can use the tweaker without using a proxy function. In fact, it won't use a proxy unless you set one up. Just use it to launch the game.